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Green 240-pin DDR2 DIMM with black chips, no heat spreader

Kingston Technology Corp.

Kingston Technology Corp. KTD-WS670/4G 4GB DDR2 400 ECC Registered memory upgrade

SKU CH-5KRF-CAPFP MPN KTD-WS670/4G

4GB DDR2 400 ECC Registered 240-pin module for compatible Dell systems

  • Total capacity4 GB
  • Rated speedDDR2 400 (PC2 3200)
  • Rated voltage1.8 V
  • Buffer typeRegistered
  • Product type240-Pin DDR2 SDRAM
  • Compatible systemsDell
  • 4GB capacity expands system memory for Dell workstations
  • DDR2 400 speed matches PC2-3200 specification exactly
  • ECC registered design detects and corrects data errors
  • 240-pin DIMM fits supported Dell Precision and PowerEdge models
  • 80 V operation meets standard DDR2 voltage requirement

Dell system memory upgrade

This 4GB module is built for Dell workstations and servers that require registered DDR2 400 memory with ECC. It installs in 240-pin slots and matches Dell part numbers such as A0742800 and A0763340 for direct compatibility.

Registered ECC thermal profile

Registered ECC operation adds a small register delay that stabilises the data bus without increasing voltage beyond the specified 1.80V. The module has no heat spreader, so airflow across the DIMM area handles the modest heat load.

Dual-rank density benefit

The dual-rank organisation allows the memory controller to interleave accesses across two ranks per module, improving bandwidth utilisation in multi-module configurations. No additional software or accessories are included.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $86.99
Cheaper than about 69% of the 21,161 comparable items (median $397.99).
Total capacity 4 GB
Lower than about 90% of the 20,941 comparable items (median 32 GB).
Price per GB $21.75 per GB
Pricier than about 67% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameKingston
Model nameKTD-WS670/4G
Total capacity4 GB
Product type240-Pin DDR2 SDRAM
Performance
Rated speedDDR2 400 (PC2 3200)
Memory
ECC supportYes
Buffer typeRegistered
Heat spreaderNo
Power
Rated voltage1.8 V
Size & build
Shipping weight0.04 kg
Package size169 × 55 × 14 mm
Compatibility
Compatible systemsDell

Questions about this item

How do I install the 240-pin DDR2 module and which notch alignment do people get wrong?

Align the single off-centre notch on the module with the key in the 240-pin DDR2 slot, press straight down until both retention clips click, and verify the registered module seats fully before powering on.

Will the ECC registered DIMM need any firmware updates or component replacements over its service life?

No firmware or replaceable parts exist on the module; the 1.80V DDR2 DRAM and register chips are soldered, so only a full DIMM swap is required if errors appear.

What limit appears first when the 4GB dual-rank module runs at DDR2 400 continuously under full load?

The registered buffer and dual-rank organisation add latency, so the memory controller's command-scheduling queue typically saturates before the PC2-3200 bandwidth ceiling is reached.

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